Hammond 266L48 96VA Transformer, 48V C.T. or 24V at 4A, Style B

The 266L48 is a 96 VA power transformer in mounting style B, rated 48 V center tapped at 2 A or 24 V at 4 A in parallel, for higher-power 24 V and 48 V low-voltage supplies. It belongs to the Hammond 266 Series of low voltage/filament transformers and is aimed at OEM engineers, repair technicians and panel builders who mount the transformer directly to a chassis.

The primary is a dual 117/234 VAC, 50/60 Hz winding: connect the two primary halves in parallel for 117 V or in series for 234 V. The dual secondaries can be used as a center-tapped secondary (48V @ 2A), connected in parallel (24V @ 4A) or used individually, and the unit is designed for use with all windings engaged.

Construction is open style with a dual bobbin design, so no electrostatic shield is required. Hammond uses Class B (130 °C) insulation for extra protection, while the design is UL listed as Class A (105 °C). Every unit is hi-pot tested at 2,000V RMS, and all leads are a minimum of 6 in long. The transformer is UL listed (# E207860) Type 3AH, CSA certified (209651), and RoHS and REACH compliant.

The 266L48 uses mounting style B with mounting hole height 0.20 in (5 mm) and width 0.38 in (10 mm). Its listed dimensions are A 2.81 in (71 mm), B 3.06 in (78 mm), C 3.38 in (86 mm) and D 2.25 in (57 mm), plus E 2.50 in (64 mm). It weighs 4.5 lbs and ships at 4.5 lbs (2.04 kg).